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andy · 04-12-2009, 08:26

I don't understand why you blur different types of products together, or how you expect a SIM card to solve your conferenve call issues.

Whilst global SIMs are hybrids using a number of suppliers to make each work, I understand that they mainly use reputable national and international pstn carriers to connect the calls, rather than VoIP. Two of those you mention in the first post certainly do so, while I don't know for the third but it's the same as Travelsim from Estonia that you mentioned.

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andy (Offline) Senior Member Prepaid Prophet Posts: 2,128 Join Date: 10 Dec 2004 Country:	04-12-2009, 08:26 I don't understand why you blur different types of products together, or how you expect a SIM card to solve your conferenve call issues. Whilst global SIMs are hybrids using a number of suppliers to make each work, I understand that they mainly use reputable national and international pstn carriers to connect the calls, rather than VoIP. Two of those you mention in the first post certainly do so, while I don't know for the third but it's the same as Travelsim from Estonia that you mentioned.